Abstract: The radar device is provided with a distance calculation unit that calculates a distance correspondence value corresponding to the distance to a target from a digital signal converted by a beat signal detection unit, and calculates the distance to the target from the distance correspondence value.

Abstract: The radar device is provided with a distance calculation unit that calculates a distance correspondence value corresponding to the distance to a target from a digital signal converted by a beat signal detection unit, and calculates the distance to the target from the distance correspondence value.

Abstract: A signal generating circuit includes a control voltage setting unit (CVSU) configured to set a control voltage for a chirp signal using voltage-frequency characteristics indicating characteristics of an output frequency versus voltage; a VCO configured to alter the frequency of its output signal by the control voltage; a quadrature demodulator configured to perform quadrature demodulation of the output signal of the VCO to generate an inphase signal and a quadrature signal orthogonal to each other; and a frequency detector configured to detect the frequency of the output signal of the VCO on the basis of the inphase signal and quadrature signal. The CVSU corrects the control voltage by using the voltage-frequency characteristics derived from relationships between the control voltage and the frequency of the output signal of the VCO. The VCO generates the chirp signal based on the control voltage corrected by the CVSU.

Abstract: Filter circuitry is constituted by transversal filters which are connected in parallel to each other. The transversal filters change amplitude and a phase of an input digital signal Xin[n·Ts] and output different digital signals X1[n·Ts], X2[n·Ts], and X3[n·Ts] as respective resulting digital signals whose amplitude and phase have been changed. A phase frequency computer computes a phase ?X[n·Ts] and a frequency fX[n·Ts] of the input digital signal Xin[n·Ts] by performing phase computation and frequency computation using the digital signals X1[n·Ts], X2[n·Ts], and X3[n·Ts] output by the transversal filters.

Abstract: Filter circuitry is constituted by transversal filters which are connected in parallel to each other. The transversal filters change amplitude and a phase of an input digital signal Xin[n·Ts] and output different digital signals X1[n·Ts], X2[n·Ts], and X3[n·Ts] as respective resulting digital signals whose amplitude and phase have been changed. A phase frequency computer computes a phase ?X[n·Ts] and a frequency fX[n·Ts] of the input digital signal Xin[n·Ts] by performing phase computation and frequency computation using the digital signals X1[n·Ts], X2[n·Ts], and X3[n·Ts] output by the transversal filters.

Abstract: A signal generating circuit includes a control voltage setting unit (CVSU) configured to set a control voltage for a chirp signal using voltage-frequency characteristics indicating characteristics of an output frequency versus voltage; a VCO configured to alter the frequency of its output signal by the control voltage; a quadrature demodulator configured to perform quadrature demodulation of the output signal of the VCO to generate an inphase signal and a quadrature signal orthogonal to each other; and a frequency detector configured to detect the frequency of the output signal of the VCO on the basis of the inphase signal and quadrature signal. The CVSU corrects the control voltage by using the voltage-frequency characteristics derived from relationships between the control voltage and the frequency of the output signal of the VCO. The VCO generates the chirp signal based on the control voltage corrected by the CVSU.

Abstract: A medical device includes a capsule endoscope in which a magnet having a magnetization direction in an axial direction is mounted and a fin portion is provided at a rear end of an endoscope main body, and which can be self-propelled through the inside of a body; and a capsule controller which controls self-propulsion of the capsule endoscope from the outside of the body by generating a static magnetic field whose direction is controlled three-dimensionally, and an alternating magnetic field orthogonal to the static magnetic field. The capsule endoscope rotates upon receiving the static magnetic field so that the magnetization direction of the magnet is parallel to the direction of the static magnetic field and the fin portion vibrates by bending with movement of the magnet in response to the alternating magnetic field.

Abstract: Provided is a medical device including a self-propelled capsule endoscope that is propelled through the inside of a body by vibration of a fin portion and a capsule controller that controls self-propulsion of the capsule endoscope from the outside of the body, the medical device being capable of precisely controlling the moving direction of the capsule endoscope easily. This medical device (1) includes: a capsule endoscope (2) in which a magnet (21) having a magnetization direction in an axial direction is mounted and a fin portion (2b) is provided at a rear end in the axial direction of an endoscope main body (2a), and which can be self-propelled through the inside of a body; and a capsule controller (3) which controls self-propulsion of the capsule endoscope (2) from the outside of the body by generating a static magnetic field whose direction is controlled three-dimensionally, and an alternating magnetic field orthogonal to the static magnetic field.

Abstract: When write request signal is input from a host device, an SSD inputs data input from the host device in an encoder sequentially and controls a RRAM to store data output from the encoder. When size of data stored in the RRAM reaches predetermined size Sref, the SSD controls the RRAM to read out data of size of the predetermined size Sref, inputs read data from the RRAM in the encoder, and controls a flash memory to store data output from the encoder. This configuration accomplishes the increase of the data write speed and improvement of reliability of the data.

Abstract: When write request signal is input from a host device 10, an SSD 20 inputs data input from the host device 10 in an encoder 30 sequentially and controls a RRAM 24 to store data output from the encoder 30. When size of data stored in the RRAM 24 reaches predetermined size Sref, the SSD 20 controls the RRAM 24 to read out data of size of the predetermined size Sref, inputs read data from the RRAM 24 in the encoder 32, and controls a flash memory 22 to store data output from the encoder 32. This configuration accomplishes the increase of the data write speed and improvement of reliability of the data.